engagement logic (alle diese Bedingungen müssen erfüllt sein):
- aircraft on ground
- gust lock engaged
- CL feather or fuel shut off
- blue hydr pressure available
READY light must be illuminated prior to any propeller brake activation. Loss of one of the above mentioned required conditions for engagement, will not imply propeller brake disengagement. However, when the gust lock is released and propeller brake is still engaged, PROP BRK light will illuminate red on CAP, assisiated with CRC (also Warnton und rotes Licht).